A foldable small-sized crane comprises a base, a connecting bar, a supporting rod and a transverse connecting rod, wherein the top of the base is connected with one side of the bottom end of the connecting bar through a hinge, and the top of the base is connected with the other side of the bottom end of the connecting bar through a buckle; the bottom end of the supporting rod is movably connected with the top of the connecting bar; the top end of the supporting rod is fixedly connected with one end of the transverse connecting rod; a fixing rod is arranged between the supporting rod and the transverse connecting rod; chain hoists are arranged at the tail end of the transverse connecting rod; the supporting rod is perpendicular to the transverse connecting rod; the bottom end of the supporting rod is in rotating shaft connection with the top of the connecting bar. The foldable small-sized crane has the benefits that the structure is simple, the use is convenient, hoisting can be realized without needing the driving of electric power, the crane is foldable, is convenient to store, saves energy, and meanwhile, is suitable for hoisting operation at a narrow circumstance.